Mattermost provides high trust collaboration and messaging solutions through an open source, community-powered approach. Enjoy all the productivity benefits of workplace messaging across web, mobile and PC, with unlimited archiving, search and integrations within IT-controlled private environments in public clouds, including AWS and Azure, as well as on-premise in private clouds and virtual or physical servers.

Thousands of organizations use Mattermost around the world in 16 languages for its unmatched benefits:

Security - Keep vital communications, including access to mobile and desktop apps, within your private environments. Deploy using dozens of security features vetted by global information security communities. Data stays on servers you control, encrypted using keys you control.

Scalability - Grow from dozens of users to tens of thousands on the same server. Built on a high performance, single-tenant infrastructure, Mattermost E20 offers cluster-based high availability deployments with horizontal scaling and advanced performance monitoring.

At its core, Mattermost is an open source, hybrid cloud alternative to proprietary SaaS messaging for teams. The software, developed in partnership with over 500 contributors from around the world, is designed to increase the agility, efficiency and innovation in high trust organizations while keeping data and operations under IT control.

Core committers, including both community contributors and paid staff at Mattermost, Inc., determine the project roadmap. For enterprises with needs beyond the scope of the open source project, commercial “Enterprise Edition” extensions are available from Mattermost, Inc. Partnership with our core committer community, along with revenue from Enterprise Edition, ensures the continued improvement of all editions.

A free-to-use, open source, self-hosted alternative to proprietary SaaS messaging. Team Edition is your open source “virtual office”, offering all the core productivity benefits of competing SaaS solutions. It deploys as single Linux binary with MySQL or PostgreSQL under an MIT license. Features include:

One-to-one and group messaging, file sharing, and unlimited search history

A commercial enterprise messaging solution for teams, groups and departments working on multiple projects scaling from hundreds to thousands of users. E10 is your “virtual campus”, offering security, configuration and access control options for larger organizations. Building on the features in Team Edition, it also offers:

A commercial enterprise-grade messaging system that scales from hundreds to tens of thousands of users. E20 is your “virtual city”, with cluster-based horizontal scaling, high availability deployment, performance monitoring systems and compliance reporting plus advanced corporate directory integration. Building on the features in E10, it also offers: